Sv: Svävmoment
Hur definerar MH en bra trav - har du till gång till sammanfattningen?
En bra sammanattning finns i en av Flyinges hingstkataloger (kan vara 92 el 93)
http://www.wbstallions.com/wb/swana/articles/EMILY.HTM Annars är den här väldigt bra om man klarar språket.
I hans forskning använder bla en årskull av Flyinges 1-åringar som bedömdes varje vecka.
När han redigerat klart filmerna fick vi de dem (500 bilder/sek) nerdraget till slowmotion
Ett urdrag ur länken;
The second day's work, with movement analysis, is very hard to describe! Let me just say that everyone, from a vet and a Level 3 trainer to several amateur riders and breeders, were enthralled by 3 hours of slow-motion video of Grand Prix horses (mostly Edinburg and Amiral) and ordinary horses performing walk, trot, collected trot, passage and piaffe as Holmström called our attention to specific joints and angles.
The most important lesson regarding movement was `Diagonal Advanced Placement' (DAP) at the trot. The two-beat of the trot, as diagonal pairs of feet strike the ground at the same time, is actually a four-beat gait in a good dressage horse, because the hind foot strikes ahead of the front foot by up to 40 milliseconds; this is `positive' DAP. In a horse that is forging, the front foot is striking first; this is `negative' DAP. DAP is hard to see in `real time', but easy to see when high-speed videos are replayed in slow motion. The good news is that even an ordinary videotape can catch DAP if you tape several strides on a level surface and have a VCR that allows you to examine frame by frame. And Holmström has found that a horse's DAP stays the same from babyhood (3 to 6 months old) through adulthood (with some lapses during awkward growth stages), and whether at liberty, in hand or under saddle. Factors that influence DAP are: unlevel surface, a lot of tension, and head carriage (too high or low).
So, get out that stallion video you've been drooling over, the tapes of those expensive youngsters you'd like to buy, film your broodmares, etc. and check them out. If the horse has a negative DAP, then it is built for speed or pulling, not dressage. If its diagonal feet are striking together, the horse will have limited ability for self-carriage and working off the hindend. And if it has a positive DAP, "It's a dressage horse."!
What about that extravagant action in front at the trot, that we all love to look at? Holmström says that a horse can be taught to do that if he has good action behind and a long humerus. But if he is moving that way in front without good DAP and power behind ("...with his hind end in Copenhagen..."), then it is not really a good trot. "Kyra calls it, `Expensive trot': you pay a lot for it, but it doesn't do you any good. If you have a horse like this, sell it!"
